.list-container {
    min-height: 100vh;
    background: #f5f5f5;
  }
  
  /* 顶部导航栏 */
  .header {
    background: linear-gradient(135deg, #6278db 0%, #635da6 100%);
    padding: 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
  }
  
  .nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
  }
  
  .nav-left {
    display: flex;
    align-items: center;
    gap: 20px;
  }
  
  .back-btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 6px;
  }
  
  .back-btn:hover {
    background: rgba(255, 255, 255, 0.3);
  }
  
  .back-icon {
    font-size: 16px;
  }
  
  .page-title {
    color: white;
    font-size: 20px;
    font-weight: 600;
    margin: 0;
  }
  
  /* 主要内容区域 */
  .main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px 20px;
  }
  
  .list-wrapper {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  }
  
  /* 空状态 */
  .empty-state {
    text-align: center;
    padding: 60px 20px;
  }
  
  .empty-icon {
    font-size: 64px;
    margin-bottom: 20px;
    opacity: 0.6;
  }
  
  .empty-text {
    color: #999;
    font-size: 16px;
    margin: 0;
  }
  
  /* 项目网格 */
  .items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 20px;
  }
  
  .list-item {
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 12px;
    padding: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
  }
  
  .list-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    border-color: #6278db;
  }
  
  .item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
  }
  
  .item-title {
    color: #333;
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    flex: 1;
    margin-right: 15px;
    line-height: 1.4;
  }
  
  .item-date {
    color: #666;
    font-size: 12px;
    white-space: nowrap;
    background: #e9ecef;
    padding: 4px 8px;
    border-radius: 4px;
  }
  
  .item-content {
    margin-bottom: 15px;
  }
  
  .item-summary {
    color: #666;
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  
  .item-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .item-type {
    background: #17a2b8;
    color: white;
    font-size: 12px;
    padding: 4px 12px;
    border-radius: 12px;
    font-weight: 500;
  }
  
  .item-priority {
    font-size: 12px;
    padding: 4px 8px;
    border-radius: 4px;
    font-weight: 500;
  }
  
  .priority-high {
    background: #f8d7da;
    color: #721c24;
  }
  
  .priority-medium {
    background: #fff3cd;
    color: #856404;
  }
  
  .priority-low {
    background: #d4edda;
    color: #155724;
  }
  
  .priority-default {
    background: #e2e3e5;
    color: #495057;
  }
  
  /* 加载状态 */
  .loading-state {
    text-align: center;
    padding: 60px 20px;
  }
  
  .loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #6278db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
  }
  
  @keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
  }
  
  /* 移动端适配 */
  @media (max-width: 768px) {
    .nav-container {
      padding: 12px 15px;
    }
    
    .page-title {
      font-size: 18px;
    }
    
    .main-content {
      padding: 20px 15px;
    }
    
    .list-wrapper {
      padding: 20px;
    }
    
    .items-grid {
      grid-template-columns: 1fr;
      gap: 15px;
    }
    
    .list-item {
      padding: 15px;
    }
    
    .item-title {
      font-size: 16px;
    }
  }
  
  @media (max-width: 480px) {
    .nav-left {
      gap: 15px;
    }
    
    .back-btn {
      padding: 6px 12px;
      font-size: 13px;
    }
    
    .page-title {
      font-size: 16px;
    }
    
    .list-wrapper {
      padding: 15px;
    }
    
    .item-header {
      flex-direction: column;
      align-items: flex-start;
      gap: 8px;
    }
    
    .item-title {
      margin-right: 0;
    }
  }